Disclosed embodiments provide techniques and devices for changing the color temperature and/or brightness of an LED lamp utilizing a selectable control device. The selectable control device may include one or more buttons, sliders, and/or rotary knobs. The buttons, sliders, and/or rotary knobs may be coupled to resistors, including variable resistors (potentiometers), that utilize resistance shunting. In embodiments, the shunt resistance varies under different dialing conditions (configuration of the selectable control device), so as to obtain different current ratios and achieve the purpose of mixing different color temperatures.

A vehicle lighting fixture and system where the fixture includes light emitting diodes (LEDs) and a lens. A controller monitors vehicle conditions and sends lighting commands to activate one or more LEDs based on the vehicle conditions. The LEDs can be red-green-blue (RGB) LEDs capable of emitting various different colors. The lighting commands can include illumination color, intensity level and on/off. The LEDs can be arranged in groups, where each group is separated from the other groups. The lighting commands can include a blink/steady designation, where blink causes the group to blink in the illumination color, and steady causes the group to steadily light in the illumination color. A blink frequency can control the blink rate in the illumination color. The lighting commands can include an intensity level; where when a group is activated it is illuminated in the illumination color at the intensity level.

The application is directed to a device housing. The device housing includes a first light device, the first light device including a first electrical supply configured to provide an electrical signal to a first light emitting diode (LED), the first LED separated from a first surface of a diffuser film by a space, wherein the diffuser film includes a second surface, opposite the first surface, the second surface configured to contact a first light pipe.

It is an illumination apparatus (10) that can achieve special illumination in addition to normal illumination. It includes a main illumination light source (21) of a predetermined luminescent color, a sub illumination light source (22) adjustable to an arbitrary luminescent color, and a control unit (30) that controls lighting of the main illumination light source (21) and the sub illumination light source (22), the main illumination light source (21) and the sub illumination light source (22) are arranged in a state where respective irradiated lights are mixed on the same path, and the control unit (30) can set a high illuminance mode in which, in addition to lighting of the main illumination light source (21) during normal use, the sub illumination light source (22) is lighted in the same luminescent color as the main illumination light source (21).

A lighting apparatus includes a first light source, a second light source, a first reflective cup, a second reflective cup, a base housing and a driver. The first light source is used for emitting a first light. The second light source is used for emitting a second light. The first reflective cup is used for limiting the first light in a first scope. The second reflective cup is used for limiting the second light in a second scope. The base housing is used for disposing the first reflective cup and the second reflective cup. The driver selectively provides a first driving current to the first light source and a second driving current to the second light source.

Disclosed embodiments relate to a combination axial fan and LED lighting system configured to fit into the footprint of a standard ceiling tile. Disclosed embodiments further include ceiling tiles with a built-in fan and/or LED lighting. The disclosed systems may include a housing container and an axial fan. The fan has a fan cavity including air diversion mechanism to direct air from the fan cavity toward the lighting and fan components. The inventions include an airflow surface to direct air existing the fan cavity along an LED light fixture. Moreover, disclosed embodiments include one or more UV light sources which irradiate contaminants as air flows through the ceiling tile.

Provided is a light fixture retrofit kit comprising: a) a body with a first LED light source of a first color and a second LED light source of a second color; b) a switch for controlling one or more of wattage of the light sources and the color; c) a bracket for attaching the body to a pre-existing housing resting on a T-bar; wherein the fixture is placed in the pre-existing housing and pivotally attached to the T-bar with the bracket, wherein the user selects to power the first light source only, the second light source only, or both the first and the second light source to produce a blended color that is different than the first and the second color, and selects to power the light sources with different levels of power (watts).

The present disclosure provides a lighting device including a first lighting unit including a plurality of first light sources arranged on a first flat or curved surface, and configured to implement lighting of a first illuminance and of a first color, a second lighting unit including a plurality of second light sources arranged on a second flat or curved surface at least partially inclined with respect to the first lighting unit, the second lighting unit surrounding at least a part of the first lighting unit, and configured to implement lighting of a second illuminance at least partially different from the first illuminance and of a second color, at least one opening formed to penetrate through the first lighting unit, and at least one third lighting unit including a plurality of third light sources arranged on a third flat or curved surface, and configured to implement lighting of a third illuminance higher than the first illuminance and of a third color through the opening. The second lighting unit may be configured to implement the lighting of the second illuminance and the second color in conjunction with the third lighting unit.

A light module includes a substrate, at least one first light source, at least one second light source, and at least one third light source. The first light source is disposed on the substrate and emits a first type of light towards a plant. The second light source is disposed on the substrate and emits a second type of light towards the plant. The third light source is disposed on the substrate and emits a third type of light towards the plant. The first to third types of light have peak wavelengths in different wavelength bands. The first type of light is UV light or blue light in a short wavelength band, the second type of light is UV light, and the third type of light is visible light.

Provided is a light beam emission device and a light beam projection device, that are downsizable, have a simple configuration, and simplify complicated processing of video signals, such as the timing adjustment of video output signals, without generating color irregularity. The devices include: a plurality of light sources; and a condensing member. A range in the light source array direction, in which emission spots of the light beams emitted from the plurality of light sources respectively exist, is within a size in the array direction of a light beam, immediately after the light beam emitted from an emission spot located most closely to the center of the plurality of light sources, with respect to the condensing member, passed through the condensing member.